The SEC Form 4 document reports that Thomas W. Gimbel, a director of Reliance Steel & Aluminum Co., sold a total of 20,000 shares of Reliance Steel & Aluminum Co. common stock on May 9, 2007 at prices of $63 and $63.01 per share. It also discloses that Mr. Gimbel beneficially owns 637,736 shares of Reliance Steel & Aluminum Co. common stock directly and 8,396,180 shares indirectly as trustee of various trusts.

1. SEC FORM 4 Page 1 of 2
SEC Form 4
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
FORM 4 OMB APPROVAL
Washington, D.C. 20549
OMB Number: 3235-0287
Expires: January 31, 2008
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Estimated average burden
Check this box if no longer subject to
hours per response 0.5
Section 16. Form 4 or Form 5 obligations
may continue. See Instruction 1(b). Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding
Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
2. Issuer Name and Ticker or Trading Symbol 5. Relationship of Reporting Person(s) to Issuer
1. Name and Address of Reporting Person*
RELIANCE STEEL & ALUMINUM CO [ RS ] (Check all applicable)
GIMBEL THOMAS W
X Director 10% Owner
Officer (give title Other (specify
(Last) (First) (Middle) below) below)
3. Date of Earliest Transaction (Month/Day/Year)
05/09/2007
P O BOX 50270
4. If Amendment, Date of Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line)
(Street)
X Form filed by One Reporting Person
PASADENA CA 91115
Form filed by More than One Reporting Person
(City) (State) (Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
2. Transaction 2A. Deemed 3. 4. Securities Acquired (A) or 5. Amount of 6. Ownership 7. Nature
1. Title of Security (Instr. 3)
Date Execution Date, Transaction Disposed Of (D) (Instr. 3, 4 and Securities Form: Direct of Indirect
(Month/Day/Year) if any Code (Instr. 5) Beneficially Owned (D) or Indirect Beneficial
(Month/Day/Year) 8) Following Reported (I) (Instr. 4) Ownership
Transaction(s) (Instr. 4)
(Instr. 3 and 4)
(A) or
Code V Amount Price
(D)
Common Stock 05/09/2007 10,000 D 647,736 D
S $63
Common Stock 05/09/2007 10,000 D 637,736 D
S $63.01
Held as
Trustee
of trusts
Common Stock 21,200 I for the
benefit
of minor
children
Held as
Trustee
of
Florence
http://www.sec.gov/Archives/edgar/data/861884/000125641407000001/xslF345X02/primary_doc.xml 5/9/2007

2. SEC FORM 4 Page 2 of 2
A.
Neilan
Trust
Common Stock 8,396,180 I
dated
August
1, 2006
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative 2. 3. Transaction 3A. Deemed 4. 5. Number 6. Date Exercisable and 7. Title and Amount of 8. Price of 9. Number 10. 11. Nature
Security (Instr. 3) Conversion Date Execution Date, Transaction of Expiration Date Securities Underlying Derivative of Ownership of Indirect
or Exercise (Month/Day/Year) if any Code (Instr. Derivative (Month/Day/Year) Derivative Security (Instr. 3 Security derivative Form: Beneficial
Price of (Month/Day/Year) 8) Securities and 4) (Instr. 5) Securities Direct (D) Ownership
Derivative Acquired Beneficially or Indirect (Instr. 4)
Security (A) or Owned (I) (Instr. 4)
Disposed Following
of (D) Reported
(Instr. 3, 4 Transaction
and 5) (s) (Instr. 4)
Amount
or
Number
Date Expiration of
Code V (A) (D) Exercisable Date Title Shares
Explanation of Responses:
Thomas W. Gimbel 05/09/2007
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
http://www.sec.gov/Archives/edgar/data/861884/000125641407000001/xslF345X02/primary_doc.xml 5/9/2007